Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Rotational inertia hoop around a central axis
- SakuRERE
- · Replies 16 ·
Derivation of Relativisitic Doppler effect with angle
- Arman777
- · Replies 8 ·
Why does a rod rotate if weight is ignored?
- SakuRERE
- · Replies 7 ·
How does a balanced pulley system move if it's in equilibrium?
- Seneka
- · Replies 1 ·
Angular momentum of particle about the origin
- Krushnaraj Pandya
- · Replies 7 ·
Ring and solid sphere rolling down an incline - rotation problem
- Krushnaraj Pandya
- · Replies 8 ·
Elevator Motion and Bathroom Scale Readings
- Lucyc2008
- · Replies 2 ·
Relevant equations for an airplane landing
- santimirandarp
- · Replies 16 ·
Correct statement about coherent sources and interference
- songoku
- · Replies 18 ·
Equation to represent the GPE of a pirate ship ride?
- minamikaze
- · Replies 2 ·
Electricity and magnetism (Gauss' law)
- Silentwhale
- · Replies 3 ·
Finding the minimum distance between two cars
- titansarus
- · Replies 13 ·
How Can Energy Change Instantaneously in a Coupled Circuit?
- cnh1995
- · Replies 12 ·
Is the Block Moving Horizontally or Perpendicularly on the Inclined Plane?
- cs2018
- · Replies 3 ·
Minimizing reflections from a ring on a bar with friction losses
- Loubrainz
- · Replies 1 ·
What Will Be the Velocity of the Center of Mass of the Raft?
- Akash47
- · Replies 7 ·
How Do I Solve This Combination Circuit?
- atoms
- · Replies 7 ·
Position of particle in inertial reference frame
- jasonchiang97
- · Replies 3 ·
Calculating Elevator Acceleration: Solve for F=ma
- Jeff Nilsson
- · Replies 3 ·
How Do You Calculate Average Speed with Variable Acceleration?
- YMMMA
- · Replies 5 ·
Centripetal Lab- finding the mass from the slope
- wispydog
- · Replies 1 ·
A ferry boat is crossing a river that is 8.5 x 10^2 m wide.
- Ayushi
- · Replies 5 ·
What would happen to the charge and capacitance?
- YMMMA
- · Replies 9 ·
Calculate the wavelength when electron transits.
- YMMMA
- · Replies 2 ·
Solving a Disappearing Voltage Puzzle: The Ball Cyclotron Project
- irdeg
- · Replies 1 ·
Calculate the displacement? (Projectile motion problem)
- TarPaul91
- · Replies 3 ·
Car braking and turning to avoid wall collision
- devilish_wit
- · Replies 3 ·
Conditions for conservation of momentum
- Krushnaraj Pandya
- · Replies 7 ·
Brightness change with temperature
- Krushnaraj Pandya
- · Replies 8 ·
Where on the hill does the projectile land?
- TarPaul91
- · Replies 9 ·
What is the direction of the velocity/ elastic collisions.
- YMMMA
- · Replies 13 ·
Small oscillation frequency of rod and disk pendulum
- Jenny Physics
- · Replies 5 ·
Electricity and magnetism: Electric Field for Two Long Charged Lines
- Silentwhale
- · Replies 1 ·
Terminal velocity of a skier using a Momentum Balance
- Henrique Orlandini
- · Replies 1 ·
How far will the girl run before catching the ball?
- YMMMA
- · Replies 10 ·
Potential energy of a block moving up and down an incline.
- YMMMA
- · Replies 7 ·
Energy and root mean square velocity question
- Krushnaraj Pandya
- · Replies 4 ·
Capillary Tube Behavior in a Gravityless Environment
- Navin
- · Replies 3 ·
Which answer is correct? Grocery Bag Net Force Question
- sam cole
- · Replies 10 ·
Molar heat capacity when gas absorbs Q and performs kQ work
- Krushnaraj Pandya
- · Replies 11 ·
Calculating Velocity Change in a Moving Charge-Magnet Interaction
- HotFurnace
- · Replies 7 ·
Kinematics: find the particle's position as a function of time
- Elsewiir
- · Replies 4 ·
The size of the image of the Sun
- Akash47
- · Replies 1 ·
Calculating Total Power Emitted by a Black Body in a Spherical Chamber
- Krushnaraj Pandya
- · Replies 7 ·
Newton's Second Law: Understanding Forces, Masses, and Acceleration
- NicholasJ
- · Replies 3 ·
Angular momentum after a collision
- Jenny Physics
- · Replies 1 ·
Which of the two dielectrics breaks down first?
- HelloCthulhu
- · Replies 2 ·
Finding friction and tension for a train
- aftonmathews
- · Replies 1 ·
Progressive Wave: Solve Puzzle at Point P
- Seneka
- · Replies 1 ·
Change in radiation with temperature
- Krushnaraj Pandya
- · Replies 6 ·
How does Newton's 3rd law apply in this case?
- Brownian notions
- · Replies 6 ·
Bremstrahlung Braking radiation spectra expected and total power
- fab13
- · Replies 17 ·
Heat capacity and temperature problem
- Krushnaraj Pandya
- · Replies 5 ·
How Is Heat Generated from Friction in Physics Problems?
- Krushnaraj Pandya
- · Replies 6 ·
Finding the pressure of a gas in three identical balloons
- Rain10399
- · Replies 12 ·
Does normal force exert torque when tipping a block?
- Ghost Repeater
- · Replies 5 ·
Is the y-component of projectile motion acceleration equal to gravity?
- devilish_wit
- · Replies 8 ·
Free falling ball with and without air resistance
- xcortz
- · Replies 3 ·
[] An Experiment to Determine the Coefficient of Friction
- Yellowkies_3275
- · Replies 6 ·
Problem About Change in Momentum/Impulse
- gibberingmouther
- · Replies 8 ·
Can we find work done on this particle, and if not, what are we missing?
- arturo
- · Replies 9 ·
Centroid of an isoceles triangle
- Zack K
- · Replies 1 ·
Static equilibrium: finding tension when force direction is unclear
- SakuRERE
- · Replies 6 ·
Photoelectric current and a convex lens
- Jahnavi
- · Replies 56 ·
Two masses on a pulley: finding the other mass
- Zeke Bevan
- · Replies 21 ·
Vertical Circle (Circular Motion)
- Mohammed S
- · Replies 5 ·
Forces on an object in vertical circular motion
- HAF
- · Replies 8 ·
Initial velocity at t=0 for a car pushed up an inclined ramp
- Indigo_Blue
- · Replies 6 ·
Where is the electric field greatest in magnitude?
- YMMMA
- · Replies 6 ·
What are the forces acting on an object?
- YMMMA
- · Replies 2 ·
Magnetic force direction on a positive and negative charges
- YMMMA
- · Replies 5 ·
How Do I Solve This Isothermal Process Thermochemistry Problem?
- michealyap
- · Replies 21 ·
Hinged Water Storage Tank -- Calculate the force on one side
- Gregs6799
- · Replies 15 ·
How do I find refractive index uncertainties?
- Sam D
- · Replies 3 ·
Parallel light through refracting surface: spherical or elliptical?
- aa_o
- · Replies 5 ·
Evolution of a particle in a well
- MikeyArey
- · Replies 10 ·
Finding Force by using the coefficient of friction and mass
- Alejandro Nava
- · Replies 16 ·
Pulley with penguin: finding tension and angle theta
- Scott McKinnon
- · Replies 3 ·
Determine the mass of an object using the angle in the system
- Santiago Tinelli
- · Replies 15 ·
How Do You Calculate the Angle of a Slipping Ladder?
- physicsstudent101
- · Replies 1 ·
How to find distance when a ball rolls slope with angle?
- physicsstudent101
- · Replies 1 ·
Circular Motion Problem: Child swinging on a rope
- Mohammed S
- · Replies 2 ·
Finding the energy density outside of an isolated charged sphere
- Coulombus
- · Replies 3 ·
Torque about a pendulum's suspension point
- JessicaHelena
- · Replies 2 ·
Why choose the contact point over the center of mass for rotational axis
- Abhimessi10
- · Replies 8 ·
Circular motion — the acceleration is not constant?
- JessicaHelena
- · Replies 1 ·
B field and H field confusion, physics GRE
- jack476
- · Replies 2 ·
Incline with friction and two blocks
- SakuRERE
- · Replies 5 ·
Projectile motion where yi doesn't equal yf
- OnePunch
- · Replies 5 ·
How do units cancel in this pressure equation?
- JesseK
- · Replies 28 ·
Given force as a function of x, how do I find the total energy?
- GriffinC
- · Replies 1 ·
Artificial gravity in a spacecraft
- Halit
- · Replies 17 ·
Weak Damping - how to relate the amplitude and phase difference
- GayYoda
- · Replies 4 ·
Tension at different points in a massive rope between two blocks
- SakuRERE
- · Replies 11 ·
Maximum power transfer with multiple voltage sources
- cnh1995
- · Replies 9 ·
Oscillating horizontal mass attached to a spring with Friction
- Miguel Orta
- · Replies 1 ·
How Is the Force on a Child in a Roller Coaster Calculated?
- Austin Gibson
- · Replies 3 ·
Compare the speed and frequency of a wave in a thick rope
- YMMMA
- · Replies 10 ·
Maximum range of cannon on vertical tower with height h
- jasonchiang97
- · Replies 4 ·